Ultra Thin 4.3 Inch Oed E-ink Screen-digital E-book Reader. Specification: Model: BK4304 Architecture: Arm 9 DSP LINUX Speed: 380 MHz RAM Memory: 512M Operating System: UCOS Control Interface: Mechanical Switch Arrow Key Display Type:4.3 Inch OED 4:3 Ratio Resolution: 800 X 600 Pixels Size: 4.3 Inch (diagonal) Surface Treatment: Anti Glare Built in Storage: 4GB / 8GB / 16GB (optional) E-book Format: EPUBFB2HMTLPDBPDFRTFTXTUMDDOC Photo Format: JPG BMP GIF PNG Data Transmission: Micro USB 2.0 High Speed Battery: 1200mAh Storage Temperature: - 20 ?? C ~ 50 ?? C / Relative Humidity: 5% to 95% Non Condensing Operating Temperature: - 10 ?? C ~ 40 ?? C / Relative Humidity: 5% to 95% Non Condensing Package Size: 150 * 113 * 34mm/5.9*4.44*1.33' Weight: 210g Package Include: 1 X Ebook Reader 1 X USB Cable 1 X PU Cover 1 X User Manual??. We are an international based seller that will ship your order from abroad please at least a minimum 14 working days for delivery right now due to the ongoing delays in shipments globally.